The default grid system provided in Bootstrap utilizes 12 columns that render out at widths of 724px, 940px (default without responsive CSS included), and 1170px. Below 767px viewports, the columns become fluid and stack vertically.
现在短视频直播流行 ，有些企业在探索 。情绪很重要 ，它是决策过程的重要组成部分 。